Emily Dickinson Lexicon

CON'STANT, a. [L. constans.]

1. Fixed; firm; opposed to fluid. To turn two fluid liquors into a constant body. – Boyle. [In this sense, not used.]
2. Fixed; not varied; unchanged; permanent; immutable. The world's a scene of changes, and to be / Constant, in nature were inconstancy. – Cowley.
3. Fixed or firm in mind, purpose, affection or principle; unshaken; unmoved; as, a constant friend or lover.
4. Certain; steady; firmly adherent; with to; as, a man constant to his prayers, or to his duties.